Meaning of SLUDGE in English

SLUDGE

/sluj/ , n.

1. mud, mire, or ooze; slush.

2. a deposit of ooze at the bottom of a body of water.

3. any of various more or less mudlike deposits or mixtures.

4. the sediment in a steam boiler or water tank.

5. broken ice, as on the sea.

6. a mixture of some finely powdered substance and water.

7. sediment deposited during the treatment of sewage.

8. Also called activated sludge . Bacteriol. sewage sediment that contains a heavy growth of microorganisms, resulting from vigorous aeration.

9. a fine, mudlike powder produced by a mining drill.

[ 1640-50; var. of dial. slutch, slitch, ME slich slime, wet mud (cf. its deriv. slucched muddy); appar. of expressive orig. ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .